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Chung C, Kudchodkar SB, Chung CN, Park YK, Xu Z, Pardi N, Abdel-Mohsen M, Muthumani K. Expanding the Reach of Monoclonal Antibodies: A Review of Synthetic Nucleic Acid Delivery in Immunotherapy. Antibodies (Basel) 2023; 12:46. [PMID: 37489368 PMCID: PMC10366852 DOI: 10.3390/antib12030046] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/26/2023] Open
Abstract
Harnessing the immune system to combat disease has revolutionized medical treatment. Monoclonal antibodies (mAbs), in particular, have emerged as important immunotherapeutic agents with clinical relevance in treating a wide range of diseases, including allergies, autoimmune diseases, neurodegenerative disorders, cancer, and infectious diseases. These mAbs are developed from naturally occurring antibodies and target specific epitopes of single molecules, minimizing off-target effects. Antibodies can also be designed to target particular pathogens or modulate immune function by activating or suppressing certain pathways. Despite their benefit for patients, the production and administration of monoclonal antibody therapeutics are laborious, costly, and time-consuming. Administration often requires inpatient stays and repeated dosing to maintain therapeutic levels, limiting their use in underserved populations and developing countries. Researchers are developing alternate methods to deliver monoclonal antibodies, including synthetic nucleic acid-based delivery, to overcome these limitations. These methods allow for in vivo production of monoclonal antibodies, which would significantly reduce costs and simplify administration logistics. This review explores new methods for monoclonal antibody delivery, including synthetic nucleic acids, and their potential to increase the accessibility and utility of life-saving treatments for several diseases.
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Affiliation(s)
| | | | - Curtis N Chung
- GeneOne Life Science, Inc., Seoul 04500, Republic of Korea
| | - Young K Park
- GeneOne Life Science, Inc., Seoul 04500, Republic of Korea
| | - Ziyang Xu
- Massachusetts General Hospital, Harvard University, Boston, MA 02114, USA
| | - Norbert Pardi
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | | | - Kar Muthumani
- GeneOne Life Science, Inc., Seoul 04500, Republic of Korea
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van Dorsten RT, Wagh K, Moore PL, Morris L. Combinations of Single Chain Variable Fragments From HIV Broadly Neutralizing Antibodies Demonstrate High Potency and Breadth. Front Immunol 2021; 12:734110. [PMID: 34603312 PMCID: PMC8481832 DOI: 10.3389/fimmu.2021.734110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/31/2021] [Indexed: 11/13/2022] Open
Abstract
Broadly neutralizing antibodies (bNAbs) are currently being assessed in clinical trials for their ability to prevent HIV infection. Single chain variable fragments (scFv) of bNAbs have advantages over full antibodies as their smaller size permits improved diffusion into mucosal tissues and facilitates vector-driven gene expression. We have previously shown that scFv of bNAbs individually retain significant breadth and potency. Here we tested combinations of five scFv derived from bNAbs CAP256-VRC26.25 (V2-apex), PGT121 (N332-supersite), 3BNC117 (CD4bs), 8ANC195 (gp120-gp41 interface) and 10E8v4 (MPER). Either two or three scFv were combined in equimolar amounts and tested in the TZM-bl neutralization assay against a multiclade panel of 17 viruses. Experimental IC50 and IC80 data were compared to predicted neutralization titers based on single scFv titers using the Loewe additive and the Bliss-Hill model. Like full-sized antibodies, combinations of scFv showed significantly improved potency and breadth compared to single scFv. Combinations of two or three scFv generally followed an independent action model for breadth and potency with no significant synergy or antagonism observed overall although some exceptions were noted. The Loewe model underestimated potency for some dual and triple combinations while the Bliss-Hill model was better at predicting IC80 titers of triple combinations. Given this, we used the Bliss-Hill model to predict the coverage of scFv against a 45-virus panel at concentrations that correlated with protection in the AMP trials. Using IC80 titers and concentrations of 1μg/mL, there was 93% coverage for one dual scFv combination (3BNC117+10E8v4), and 96% coverage for two of the triple combinations (CAP256.25+3BNC117+10E8v4 and PGT121+3BNC117+10E8v4). Combinations of scFv, therefore, show significantly improved breadth and potency over individual scFv and given their size advantage, have potential for use in passive immunization.
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Affiliation(s)
- Rebecca T. van Dorsten
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa
- Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kshitij Wagh
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, United States
| | - Penny L. Moore
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa
- Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Center for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Lynn Morris
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg, South Africa
- Medical Research Council (MRC) Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Center for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
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Hay CE, Ewing LE, Hambuchen MD, Zintner SM, Small JC, Bolden CT, Fantegrossi WE, Margaritis P, Owens SM, Peterson EC. The Development and Characterization of an scFv-Fc Fusion-Based Gene Therapy to Reduce the Psychostimulant Effects of Methamphetamine Abuse. J Pharmacol Exp Ther 2020; 374:16-23. [PMID: 32245884 DOI: 10.1124/jpet.119.261180] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 03/31/2020] [Indexed: 12/17/2022] Open
Abstract
Methamphetamine (METH) continues to be among the most addictive and abused drugs in the United States. Unfortunately, there are currently no Food and Drug Administration-approved pharmacological treatments for METH-use disorder. We have previously explored the use of adeno-associated viral (AAV)-mediated gene transfer of an anti-METH monoclonal antibody. Here, we advance our approach by generating a novel anti-METH single-chain variable fragment (scFv)-Fc fusion construct (termed 7F9-Fc) packaged into AAV serotype 8 vector (called AAV-scFv-Fc) and tested in vivo and ex vivo. A range of doses [1 × 1010, 1 × 1011, and 1 × 1012 vector copies (vcs)/mouse] were administered to mice, eliciting a dose-dependent expression of 7F9-Fc in serum with peak circulating concentrations of 48, 1785, and 3831 µg/ml, respectively. Expressed 7F9-Fc exhibited high-affinity METH binding, IC50 = 17 nM. Between days 21 and 35 after vector administration, at both 1 × 1011 vc/mouse and 1 × 1012 vc/mouse doses, the AAV-7F9-Fc gene therapy significantly decreased the potency of METH in locomotor assays. On day 116 post-AAV administration, mice expressing 7F9-Fc sequestered over 2.5 times more METH in the serum than vehicle-treated mice, and METH concentrations in the brain were reduced by 1.2 times the value for vehicle mice. These data suggest that an AAV-delivered anti-METH Fc fusion antibody could be used to persistently reduce concentrations of METH in the central nervous system. SIGNIFICANCE STATEMENT: In this manuscript, we describe the testing of a novel antimethamphetamine (METH) single-chain variable fragment-Fc fusion protein delivered in mice using gene therapy. The results suggest that the gene therapy delivery system can lead to the production of significant antibody concentrations that mitigate METH's psychostimulant effects in mice over an extended time period.
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Affiliation(s)
- Charles E Hay
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Laura E Ewing
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Michael D Hambuchen
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Shannon M Zintner
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Juliana C Small
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Chris T Bolden
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - William E Fantegrossi
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Paris Margaritis
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - S Michael Owens
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
| | - Eric C Peterson
- University of Arkansas for Medical Sciences, Little Rock, Arkansas (C.E.H., L.E.E., M.D.H., C.T.B., W.E.F., S.M.O., E.C.P,); The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (S.M.Z., J.C.S., P.M.,); The Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (P.M.); and Department of Pediatrics, The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania (P.M.)
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